Definitive Technology DT 6.5STR Custom Install Series Round 6.5″ Single Stereo and Surround In-Ceiling Speaker – White

Brand: Definitive Technology
Model Number: DT 6.5STR
UPC: 093207099229
Model Number: DT 6.5STR
UPC: 093207099229
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Definitive Technology DT 6.5STR Custom Install Series Round 6.5″ Single Stereo and Surround In-Ceiling Speaker – White

-Stereo-input speaker plays both the left and right channels of the stereo mix
-Dual 3/4″ aluminum dome tweeters
-Tweeters are aimable to direct high-frequency details towards you
-6-1/2″ mineral-filled polypropylene woofer
-Frequency response: 27-30,000 Hz (±3 dB)

Product Description

Features & Specifications



Definitive Technology DT 6.5STR Custom Install Series Round 6.5″ Single Stereo and Surround In-Ceiling Speaker – White

Ultimate In-Ceiling Versatility

With the flip of a switch, the DT 6.5STR transitions from the ideal single stereo speaker for smaller spaces, like bathrooms, to a surround speaker that lavishes your home theater with rich immersive fidelity.

Single Speaker Solution

Full stereo or surround sound performance.

Powerful Bass, Dynamic Mids

From a 6.5” composite mineral-filled polypropylene driver cone.

Dual-Angled Tweeters

For authentic stereo sound from a single chassis on the DT 6.5STR.

Definitive Audio Performance: The In-Ceiling Speaker that Covers It All

The DT 6.5STR features dual .75” Pivoting Dome Tweeters and a 6.5” Mid/Woofer and 1” Pivoting Dome Tweeter for clear, detailed stereo or immersive, room-filling surround sound. Every component in the DT Series is optimized for superior quality and sound. And each component is conceived and developed in-house for a listening experience that delivers and a product that endures.

Single-Speaker Stereo Solution

The DT 6.5STR is ideal for limited-space applications such as hallways, kitchens, bathrooms, and offices. Its innovative configuration  features a stereo setup within a single round ceiling speaker. Bristling with technologies such as dual voice coils powering the mid/bass driver and an innovative dual-angle tweeter configuration, it produces broad stereo dispersion from just one speaker.

Low-Diffraction Swivel Tweeter for High-Performance High Frequencies

The DT 6.5STR features our low-diffraction swivel tweeter. Its specially-designed housing eliminates cross-driver interference with the midrange driver while improving dispersion and off-axis response. The swivel mechanism enables the installer to aim the tweeter for pinpoint direct audio or diffuse surround sound.

High-Performance Audio Components in your Walls and Ceilings

Teeming with high-tech components such as annealed aluminum tweeters, polypropylene mineral-filled mid/bass cones, and anti-diffraction surfaces, the DT Series reproduces audio with the legendary voicing you’ve come to expect from Definitive Technology.

Pure Aluminum Swivel Tweeter

The ultralight, rigid construction of the DT 6.5STR’s aluminum dome tweeter enables it to play significantly higher frequencies than we can hear, allowing for optimum linearity within the range of human hearing. The swivel mechanism lets installers orient the tweeter for precise direct sound or diffuse surround sound – or anything in between.

Quick and Easy Installs: Truly Custom Installations

Using only four common tools and a pencil, installers will find it a breeze to install the DT 6.5STR in-ceiling speaker. With strong yet lightweight construction, integrated pivoting lock arms, paintable grilles, and magnetic grille fasteners, you’ll have your DT6.5STR speakers installed and playing sweet audio in no time.

Pivoting Tweeters for Customized Sound

When using DT 6.5STR speakers as fronts in a home theater setup or as stereo speakers in a distributed audio system, installers can aim the tweeter toward the main listening position for improved imaging and detail. When using as rear/surround speakers, installers can aim the tweeter toward an adjacent wall or ceiling for a more diffuse sound field.

Fewer Tools Needed for Faster Installs

Rotating lock arms, magnetically-attached grilles, and heavy-gauge speaker wire push terminals enable a faster, simpler installation using fewer tools.

Paintable Magnetic Grilles for the Custom Touch

The DT 6.5STR speaker grilles and grille frames are paintable, with easy step-by-step instructions. Once you have your perfect look, powerful neodymium magnets attach the grilles to the speakers for a secure, tool-free finish.

Affordable Customization for Everyone

DT Series is the culmination of years of research and engineering to innovate an affordable in-wall/ in-ceiling speaker line that’s Definitive Technology to the core. Equally at home in distributed audio, home theater, and commercial settings, DT Series speakers bring enthralling music, movies, gaming, and background audio to walls and ceilings — with ease and stealth.

Brand Definitive Technology   Model Definitive Technology DT 6.5STR
Product: Definitive Technology DT 6.5STR Custom Install Series Round 6.5" Single Stereo and Surround In-Ceiling Speaker - White


Speaker Sensitivity

86 – 90 db

Speaker Size



8 Ω

Tweeter Size

0.75" – .99"


Quantity in Package: Single
Tweeter: Hard-Dome
Aimable Tweeter: No
Woofer Composition: Polypropylene
Woofer Surround: Rubber
Moisture-resistant: No
Connector Type: Spring post
Bi-Amp Inputs: No
Built-in Back-box: No


Speaker Shape: Round
Woofer Size: 6.5
Cutout Width: 7.25
Cutout Height: 7.25
Power Range (Watts): 10-100
Frequency Response: 27-30kHz

Estimated Shipping

When you add an item to your cart the Estimated Shipping* cost will be shown.  This estimated shipping* cost is accurate to most major city locations across Canada.  If the shipping cost is higher than the estimated shipping* then GibbysESM will contact you for approval before we process your order.

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Definitive Technology Canada 1 year Limited Manufacturers Warranty


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